National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds

84°F

29°C

Humidity 53%
Wind Speed N 18 G 26 mph
Barometer 29.85 in (1009.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Mar 2:54 pm ChST
Extended Forecast for

Agat GU

Coastal Flood Watch March 18, 03:30pm until March 18, 04:00pm
High Surf Advisory March 18, 03:30pm until March 20, 04:00pm
Click here for hazard details and duration
Coastal Flood Watch
High Surf Advisory
  •  
    Coastal Flood Watch March 18, 03:30pm until March 18, 04:00pm
    High Surf Advisory March 18, 03:30pm until March 20, 04:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 73 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers. Mostly sunny, with a high near 86. Northeast wind 11 to 18 mph, with gusts as high as 24 mph.

    High: 86 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 73. Northeast wind 9 to 15 mph, with gusts as high as 22 mph.

    Low: 73 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Mostly sunny, with a high near 86. East northeast wind 13 to 17 mph, with gusts as high as 23 mph.

    High: 86 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. East northeast wind 11 to 17 mph, with gusts as high as 24 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 73. Northeast wind 11 to 16 mph, with gusts as high as 21 mph.
Thursday
Isolated showers. Mostly sunny, with a high near 86. Northeast wind 11 to 18 mph, with gusts as high as 24 mph.
Thursday Night
Isolated showers. Partly cloudy, with a low around 73. Northeast wind 9 to 15 mph, with gusts as high as 22 mph.
Friday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind 13 to 17 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 73. East northeast wind 11 to 17 mph, with gusts as high as 24 mph.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Mostly cloudy, with a low around 73.
Monday
A chance of showers. Partly sunny, with a high near 87.
Monday Night
A chance of showers. Mostly cloudy, with a low around 73.
Tuesday
A chance of showers. Partly sunny, with a high near 87.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 77.
Wednesday
A chance of showers. Partly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agat GU
 13.38°N 144.67°E
Last Update:
6:06 am ChST Mar 18, 2026
Forecast Valid:
3pm ChST Mar 18, 2026-6pm ChST Mar 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation